[Nov 25, 2021] H31-311-ENU Exam Dumps 100% Same Q&A In Your Real Exam
H31-311-ENU Test Engine Dumps Training With 190 Questions
NEW QUESTION 69
The PRBS can be used to test whether an SDH service is normal and whether the protection switching function is normal.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 70
Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 71
After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 72
Which of the following statements about ODUk_PM_BDI is correct?
- A. ODUk PM open connection indication
- B. ODUk PM signal degrade
- C. ODUk PM section BIP8 bit error threshold crossing
- D. ODUk PM backward defect indication
Answer: D
NEW QUESTION 73
When a VLAN-based service type is configured, which of the following functions must be enabled on the port?
- A. Flow control
- B. Entry detection
- C. Auto-negotiation mode
- D. Broadcast packet suppression
Answer: B
NEW QUESTION 74
The STM-64 has ( ) AU pointers.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 75
Which of the following device domains can be managed by the U2000? (Multiple Choice)
- A. Wireless device
- B. Access device
- C. Data communication device
- D. Transport device
Answer: A,B,C,D
NEW QUESTION 76
Which of the following logical functional module is used to generate an R-LOS alarm?
- A. SPI
- B. RST
- C. MSA
- D. MST
Answer: A
NEW QUESTION 77
Which of the following can be configured as the monitoring time of NE performance events?
- A. Same as the current time of the NE
- B. Earlier than the current time
- C. Later than the current time
- D. Any time
Answer: C
NEW QUESTION 78
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
- A. HP_SLM
- B. HP_TIM
- C. RS_TEM
- D. LP_TEM
Answer: B
NEW QUESTION 79
Which of the following is the meaning of SFD in the Ethernet frame structure?
- A. Start frame delimiter
- B. Frame check sequence
- C. Preamble
- D. Payload
Answer: A
NEW QUESTION 80
Which of the following factors determines that the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent.
Which of the following is the main cause?
- A. New types of optical fibers are not used.
- B. EDFAs are used.
- C. Fiber attenuation is excessively high.
- D. Multiplexers and demultiplexers are used.
Answer: B
NEW QUESTION 81
OTM nr.m consists of a maximum of "n" optical multiplexing channels and does not support non-channel-associated overheads. The letter "r" indicates function reduction.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 82
Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?
① The B2 byte indicates the transmission channel.
② The M1 byte indicates the transmission channel.
③ MS-REI is transmitted from the sink to the source.
④ MS-REI is transmitted from the source to the sink.
⑤ Indicates the number of detected bit errors after the sink receives the MS signals.
- A. ①④⑤
- B. ①③⑤
- C. ②④⑤
- D. ②③⑤
Answer: D
NEW QUESTION 83
Which of the following is the maximum number of OSN 3500 subracks that can be installed in a 2.2 m cabinet?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 84
When synchronization is performed on the U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 85
The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 86
An arrayed waveguide grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large number of channels, and flat passband. It suits DWDM systems with ultra-high speed and large capacity.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 87
The STAT indicator of an SDH board is blinking red, on for 100 ms and off for 100 ms.
Which of the following is the meaning of the indicator status?
- A. Hardware fault
- B. Normal operating
- C. Hardware mismatch
- D. No power supply input
Answer: C
NEW QUESTION 88
PDM uses the polarization beam splitter to divide the laser into two perpendicular directions: x and y.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 89
Which of the following is the frame structure of STM-16?
- A. 9*270*4
- B. 9*270*64
- C. 9*270*16
- D. 9*270*1
Answer: C
NEW QUESTION 90
Assume that 2 x VC-12 timeslots need to be bound with VCTRUNK1 of the N2EFS4 board.
When 8 x VC-4 timeslots are available on the N2EFS4 board, which of the following timeslots meets the requirements?
- A. VC-12 timeslots 1 and 2 of the fourth VC-4
- B. VC-12 timeslots 33 and 34 of the second VC-4
- C. VC-12 timeslots 1 and 2 of the eighth VC-4
- D. VC-12 timeslots 1 and 2 of the first VC-4
Answer: A
NEW QUESTION 91
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